Soils of the World

Wiley InterScience

This site features a global map showing the major occurrences of the seven different soil orders of the world; alfisols, ultisols, mollisols, spodosols, vertisols, oxisols, and aridisols. Users can observe how the soil orders are correlated with global climate zones. Clicking on each soil order in the map legend yields a photograph of an example soil profile for that order.

This resource is referenced here: